What's My Potential Estate Tax? This calculator helps estimate your federal estate tax liability. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content When Special Care Is Needed: The Special Needs Trust A special needs trust helps care for a special needs child when you’re gone. Tips for Finding Care for Your Disabled Child The care of special-needs children continues into their adult years, and may survive the passing of their parents. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.